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为准确计算高温气冷堆(HTGR)氦气透平循环装置HTR-10GT的回热器芯部在旁路阀调节时的响应特性,提出了适用于回热器的、基于双曲型守恒律方程和Warming-beam线性化方法的分布式求解方法。该方法考虑了工质热物性随温度的连续变化。对其他换热部件、叶轮机械及空腔的特性进行了简化建模,得出了旁路阀调节时回热器进口流量和温度的变化,在此基础上比较和分析了旁路阀在不同位置时回热器芯部所受的温度冲击。计算结果表明:把高压压气机出口到回热器高温侧入口和出口的旁路阀同时打开、在保持调节效果不变的前提下,回热器芯部受到的温度冲击得以减轻。
In order to accurately calculate the response characteristics of regenerator core of HTGR helium turbine circulating device HTR-10GT when the bypass valve is adjusted, a hyperbolic conservation law for regenerator is proposed Distributed Solving Method of Equations and Warming-beam Linearization Methods. The method takes into account the continuous change of thermal properties of working fluid with temperature. The characteristics of other heat exchange components, impeller and cavity are simplified and the change of inlet flow rate and temperature of regenerator during bypass valve adjustment are obtained. Based on the comparison and analysis, Location of the regenerator core suffered the temperature impact. The calculation results show that when the high-pressure compressor is opened to the bypass valve at the inlet and outlet of the high-temperature side of the regenerator at the same time, the temperature impact on the regenerator core is alleviated while keeping the regulation unchanged.